3-Phase Input Wiring Error - Samsung AM072BXV Series Service Manual

Troubleshooting
4-3 Appropriate Measures for Different Symptom (cont.)
4-3-33

3-phase Input Wiring error

Outdoor unit
display
Duct, Cassette (1/2 Way),Console, Celing
Operation
Indoorunit
display
×
※ ● : ON ◑ : Flash ×: OFF
• When turn on the power and check the status of the power from the inverter.
If the phase does not connect the power(no phase) : E425 or E466 (E366) is displayed
Judgment
(Air conditioner to maintain the normal state.)
Method
However) N-phase must be properly connected.
• Check the input wiring
Cause of
problem
• EMI Fuse short
1. Cause of problem
Power Off
Did the Main
Terminal Block and Power R, S, T, N is
connected properly?
Did the Reactor
Connection Terminal is connected
properly?
Did the EMI PBA Fuse is short?
Is EMI PBA CN21
connector and Inverter PBA accurately
connected?
Replace the MAIN PBA.
Samsung Electronics
Defrost Timer Fan Filter/MPI
×
◑ ◑
Yes
Yes
No
Yes
Cassette (4/Mini4 Way)
Operation Defrost
×
◑ ◑
No
No
No
Yes
Wall-mounted (NeoForte)
Timer Filter Operation Timer
◑ ◑ ●
Power BOX Terminal : Check the phase-to-phase
connection of the R, S, T and then restart.
(N-phase must be properly connected.)
Connection and then restart it
Low voltage error during this initial charge :
Replace Fuse, if the rectifier diode of the
inverter PBA is normal.
Connection and then restart it
Turbo
◑ ◑
114